// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/functions/prestosql/types/utils/timestamp_with_time_zone_input_generator.h>

#include <gtest/gtest.h>

#include <pollux/functions/prestosql/types/timestamp_with_time_zone_type.h>
#include <pollux/type/variant.h>
#include <pollux/type/tz/time_zone_map.h>

namespace kumo::pollux::fuzzer::test {

TEST(TimestampWithTimeZoneInputGeneratorTest, generate) {
  TimestampWithTimeZoneInputGenerator generator(123456, 0.1);

  size_t numTrials = 100;
  for (size_t i = 0; i < numTrials; ++i) {
    variant generated = generator.generate();

    if (generated.isNull()) {
      continue;
    }

    generated.checkIsKind(TypeKind::BIGINT);
    const auto value = generated.value<TypeKind::BIGINT>();

    // The value can be any random int64_t with the one restriction that the
    // time zone should be valid.
    auto zoneKey = unpackZoneKeyId(value);
    EXPECT_NE(tz::locateZone(zoneKey), nullptr);
  }
}
} // namespace kumo::pollux::fuzzer::test
